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Discontinued Warning IconPlease Note: This Brand Name drug is no longer available in the US.
(Generic versions may still be available.)

Teslac Patient Information including How Should I Take

What should I discuss with my healthcare provider before taking testolactone (Teslac)?

Testolactone should not be used for the treatment of men with breast cancer or in patients with a history of allergic reactions to the drug.

Testolactone is in the FDA pregnancy category C. This means that it is not known whether testolactone will be harmful to an unborn baby. Do not take this medication without first talking to your doctor if you are pregnant or could become pregnant during treatment.

Testolactone passes into breast milk in small amounts and may affect a nursing baby. Do not take testolactone without first talking to your doctor if you are breast-feeding a baby.

How should I take testolactone (Teslac)?

Take testolactone exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.

Take each dose with a full glass (8 ounces) of water.

It is important to take testolactone regularly to get the most benefit.

Your doctor may want you to have breast exams (or to perform self breast exams), mammograms, blood tests, or other medical evaluations during treatment with testolactone to monitor progress and side effects.

Store testolactone at room temperature away from moisture and heat. Keep this product out of the reach of children.

Side Effects Centers

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Breast Cancer

Find support and advances in treatment.